Agilent Technologies TwisTorr 304 FS AG Notice De Mode D'emploi page 224

17 Technical Information
Programmable Analog Output Diagrams
The maximum power provided by controller to drive a gauge is 5W, if your gauge
NOTE
require more power you need an external power supply.
The controller recognizes automatically the gauge connected by
reading the signal "identification" in the connector.
Following a table with the gauge supported:
Gauge model
FRG 700/702
IMG 500
PVG 500/502
CDG 500 T1000
CDG 500 T0100
CDG 500 T0010
CDG 500 T0001
The controller give the error "gauge error" if the gauge connected
is not supported.
There are some gauges (for example the CDG family gauge) that
have the same identification. In this case the controller
recognizes the family of the gauge but the user should select the
right gauge by front panel.
The pressure can be read by display, by serial line (win. 224) and
by Remote I/O (Programmable Analog Out), but the controller
doesn't replicate the signal from the gauge.
If the Programmable Analog Output is related to the pressure
read by an external gauge, the controller doesn't replicate
exactly the signal coming from the gauge; the controller converts
the gauge signal in the range from 0 to 10V.
The conversion formula is the following:
V
out
224/301
−
V V
= ×
g g _ min
−
V V
g _ max g _ min
TwisTorr 304 FS AG Rack Controller User Manual / 87-901-029-01 (E)
Name showed in the display
FRGa
IMG
PVGa
CDG3
CDG2
CDG1
CDG0
10